diff --git a/CleanSpec.mk b/CleanSpec.mk
index b1b139a..481829a 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -122,11 +122,6 @@
 # Changing where ro.carrier value is instantiated for system/build.prop
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 
-$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
-$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
-$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/app/*)
-$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
-
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/build_id.mk b/core/build_id.mk
index 60cabb1..e954794 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -1,4 +1,3 @@
-
 #
 # Copyright (C) 2008 The Android Open Source Project
 #
@@ -14,9 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+#
+# Defines branch-specific values.
+#
+
 # BUILD_ID is usually used to specify the branch name
 # (like "MAIN") or a branch name and a release candidate
-# (like "CRB01").  It must be a single word, and is
+# (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
+#
+BUILD_ID := OPENMASTER
 
-export BUILD_ID=JRN46
+# DISPLAY_BUILD_NUMBER should only be set for development branches,
+# If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
+# a more descriptive BUILD_ID_DISPLAY, otherwise BUILD_ID_DISPLAY
+# is the same as BUILD_ID
+DISPLAY_BUILD_NUMBER := true
diff --git a/core/combo/HOST_darwin-x86.mk b/core/combo/HOST_darwin-x86.mk
index 198c53f..a3ba7d3 100644
--- a/core/combo/HOST_darwin-x86.mk
+++ b/core/combo/HOST_darwin-x86.mk
@@ -48,8 +48,18 @@
 HOST_GLOBAL_CFLAGS += -fPIC
 HOST_NO_UNDEFINED_LDFLAGS := -Wl,-undefined,error
 
-HOST_CC := $(CC)
-HOST_CXX := $(CXX)
+GCC_REALPATH = $(realpath $(shell which gcc))
+ifneq ($(findstring llvm-gcc,$(GCC_REALPATH)),)
+    # Using LLVM GCC results in a non functional emulator due to it
+    # not honouring global register variables
+    $(warning ****************************************)
+    $(warning * gcc is linked to llvm-gcc which will *)
+    $(warning * not create a useable emulator.       *)
+    $(warning ****************************************)
+endif
+
+HOST_CC := gcc
+HOST_CXX := g++
 HOST_AR := $(AR)
 HOST_STRIP := $(STRIP)
 HOST_STRIP_COMMAND = $(HOST_STRIP) --strip-debug $< -o $@
@@ -59,7 +69,7 @@
 
 HOST_GLOBAL_CFLAGS += \
 	-include $(call select-android-config-h,darwin-x86)
-ifneq ($(filter 10.7.%, $(build_mac_version)),)
+ifneq ($(filter 10.7 10.7.% 10.8 10.8.%, $(build_mac_version)),)
        HOST_RUN_RANLIB_AFTER_COPYING := false
 else
        HOST_RUN_RANLIB_AFTER_COPYING := true
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 4a461f8..e263d0c 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -181,7 +181,7 @@
 TARGET_FDO_LIB:=
 
 target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
-        --print-file-name=libgcov.a)
+        -print-file-name=libgcov.a)
 ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
   # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
   # The profile will be generated on /data/local/tmp/profile on the device.
diff --git a/core/config.mk b/core/config.mk
index f02fbef..b0b5082 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -326,7 +326,7 @@
 ifeq ($(HOST_OS),darwin)
 dir := $(HOST_OS)-$(HOST_ARCH)
 endif
-OLD_FLEX := prebuilt/$(HOST_PREBUILT_TAG)/flex/flex-2.5.4a$(HOST_EXECUTABLE_SUFFIX)
+OLD_FLEX := prebuilts/misc/$(HOST_PREBUILT_TAG)/flex/flex-2.5.4a$(HOST_EXECUTABLE_SUFFIX)
 
 ifeq ($(HOST_OS),darwin)
 # Mac OS' screwy version of java uses a non-standard directory layout
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 021617d..02ac42c 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -41,7 +41,7 @@
   # which is the version that we reveal to the end user.
   # Update this value when the platform version changes (rather
   # than overriding it somewhere else).  Can be an arbitrary string.
-  PLATFORM_VERSION := 4.1
+  PLATFORM_VERSION := 4.0.9.99.999.9999.99999
 endif
 
 ifeq "" "$(PLATFORM_SDK_VERSION)"
@@ -53,13 +53,13 @@
   # intermediate builds).  During development, this number remains at the
   # SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
   # the code-name of the new development work.
-  PLATFORM_SDK_VERSION := 16
+  PLATFORM_SDK_VERSION := 15
 endif
 
 ifeq "" "$(PLATFORM_VERSION_CODENAME)"
   # This is the current development code-name, if the build is not a final
   # release build.  If this is a final release build, it is simply "REL".
-  PLATFORM_VERSION_CODENAME := REL
+  PLATFORM_VERSION_CODENAME := AOSP
 endif
 
 ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
diff --git a/target/board/generic/BoardConfig.mk b/target/board/generic/BoardConfig.mk
index bc999fa..cee09ce 100644
--- a/target/board/generic/BoardConfig.mk
+++ b/target/board/generic/BoardConfig.mk
@@ -35,7 +35,9 @@
 # Enable dex-preoptimization to speed up the first boot sequence
 # of an SDK AVD. Note that this operation only works on Linux for now
 ifeq ($(HOST_OS),linux)
-WITH_DEXPREOPT := true
+  ifeq ($(WITH_DEXPREOPT),)
+    WITH_DEXPREOPT := true
+  endif
 endif
 
 # Build OpenGLES emulation guest and host libraries
diff --git a/target/board/generic_mips/Android.mk b/target/board/generic_mips/Android.mk
new file mode 100644
index 0000000..abf8d57
--- /dev/null
+++ b/target/board/generic_mips/Android.mk
@@ -0,0 +1,17 @@
+#
+# Copyright (C) 2011 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH := $(call my-dir)
diff --git a/target/board/generic_mips/BoardConfig.mk b/target/board/generic_mips/BoardConfig.mk
new file mode 100644
index 0000000..722e112
--- /dev/null
+++ b/target/board/generic_mips/BoardConfig.mk
@@ -0,0 +1,53 @@
+#
+# Copyright (C) 2011 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# BoardConfig.mk
+#
+# Product-specific compile-time definitions.
+#
+
+# The generic product target doesn't have any hardware-specific pieces.
+TARGET_NO_BOOTLOADER := true
+TARGET_NO_KERNEL := true
+
+TARGET_ARCH := mips
+ifeq (,$(TARGET_ARCH_VARIANT))
+TARGET_ARCH_VARIANT := mips32r2-fp
+endif
+GET_CPU_ABI  := mips
+
+HAVE_HTC_AUDIO_DRIVER := true
+BOARD_USES_GENERIC_AUDIO := true
+
+# no hardware camera
+USE_CAMERA_STUB := true
+
+# Set /system/bin/sh to ash, not mksh, to make sure we can switch back.
+TARGET_SHELL := ash
+
+# Enable dex-preoptimization to speed up the first boot sequence
+# of an SDK AVD. Note that this operation only works on Linux for now
+ifeq ($(HOST_OS),linux)
+  ifeq ($(WITH_DEXPREOPT),)
+    WITH_DEXPREOPT := true
+  endif
+endif
+
+# Build OpenGLES emulation guest and host libraries
+BUILD_EMULATOR_OPENGL := true
+
+# Build and enable the OpenGL ES View renderer. When running on the emulator,
+# the GLES renderer disables itself if host GL acceleration isn't available.
+USE_OPENGL_RENDERER := true
diff --git a/target/board/generic_mips/README.txt b/target/board/generic_mips/README.txt
new file mode 100644
index 0000000..b31a857
--- /dev/null
+++ b/target/board/generic_mips/README.txt
@@ -0,0 +1,9 @@
+The "generic_mips" product defines a MIPS based non-hardware-specific
+target without a kernel or bootloader.
+
+It can be used to build the entire user-level system, and
+will work with the emulator, though sound will not work
+(see the "emulator" product for that).
+
+It is not a product "base class"; no other products inherit
+from it or use it in any way.
diff --git a/target/board/generic_mips/device.mk b/target/board/generic_mips/device.mk
new file mode 100644
index 0000000..bd08fde
--- /dev/null
+++ b/target/board/generic_mips/device.mk
@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is a build configuration for the product aspects that
+# are specific to the emulator.
+
+PRODUCT_PROPERTY_OVERRIDES := \
+    ro.ril.hsxpa=1 \
+    ro.ril.gprsclass=10
+
+PRODUCT_COPY_FILES := \
+    development/data/etc/apns-conf.xml:system/etc/apns-conf.xml \
+    development/data/etc/vold.conf:system/etc/vold.conf \
+    development/tools/emulator/system/camera/media_profiles.xml:system/etc/media_profiles.xml
+
+PRODUCT_PACKAGES := \
+    audio.primary.goldfish
diff --git a/target/board/generic_mips/system.prop b/target/board/generic_mips/system.prop
new file mode 100644
index 0000000..137a0f9
--- /dev/null
+++ b/target/board/generic_mips/system.prop
@@ -0,0 +1,6 @@
+#
+# system.prop for generic sdk
+#
+
+rild.libpath=/system/lib/libreference-ril.so
+rild.libargs=-d /dev/ttyS0
diff --git a/target/board/generic_x86/BoardConfig.mk b/target/board/generic_x86/BoardConfig.mk
index c62b0a4..35a5520 100644
--- a/target/board/generic_x86/BoardConfig.mk
+++ b/target/board/generic_x86/BoardConfig.mk
@@ -18,6 +18,9 @@
 # no hardware camera
 USE_CAMERA_STUB := true
 
+# customize the malloced address to be 16-byte aligned
+BOARD_MALLOC_ALIGNMENT := 16
+
 # Set /system/bin/sh to ash, not mksh, to make sure we can switch back.
 TARGET_SHELL := ash
 
diff --git a/target/product/AndroidProducts.mk b/target/product/AndroidProducts.mk
index 44b9000..9279633 100644
--- a/target/product/AndroidProducts.mk
+++ b/target/product/AndroidProducts.mk
@@ -36,10 +36,13 @@
     $(LOCAL_DIR)/core.mk \
     $(LOCAL_DIR)/generic.mk \
     $(LOCAL_DIR)/generic_x86.mk \
+    $(LOCAL_DIR)/generic_mips.mk \
     $(LOCAL_DIR)/full.mk \
     $(LOCAL_DIR)/full_x86.mk \
+    $(LOCAL_DIR)/full_mips.mk \
     $(LOCAL_DIR)/vbox_x86.mk \
     $(LOCAL_DIR)/sdk.mk \
     $(LOCAL_DIR)/sdk_x86.mk \
+    $(LOCAL_DIR)/sdk_mips.mk \
     $(LOCAL_DIR)/large_emu_hw.mk
 endif
diff --git a/target/product/full_mips.mk b/target/product/full_mips.mk
new file mode 100644
index 0000000..886cf31
--- /dev/null
+++ b/target/product/full_mips.mk
@@ -0,0 +1,32 @@
+#
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is a build configuration for a full-featured build of the
+# Open-Source part of the tree. It's geared toward a US-centric
+# mips build quite specifically for the emulator, and might not be
+# entirely appropriate to inherit from for on-device configurations.
+
+PRODUCT_PACKAGES := \
+    Camera
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/full_base_telephony.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/board/generic_mips/device.mk)
+
+# Overrides
+PRODUCT_NAME := full_mips
+PRODUCT_DEVICE := generic_mips
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := Full MIPS Android on Emulator
diff --git a/target/product/generic_mips.mk b/target/product/generic_mips.mk
new file mode 100644
index 0000000..7b53d04
--- /dev/null
+++ b/target/product/generic_mips.mk
@@ -0,0 +1,26 @@
+#
+# Copyright (C) 2007 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is a generic phone product that isn't specialized for a specific device.
+# It includes the base Android platform.
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/generic_no_telephony.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/telephony.mk)
+
+# Overrides
+PRODUCT_BRAND := generic_mips
+PRODUCT_DEVICE := generic_mips
+PRODUCT_NAME := generic_mips
diff --git a/target/product/locales_full.mk b/target/product/locales_full.mk
index 8b8ab05..3a90d2b 100644
--- a/target/product/locales_full.mk
+++ b/target/product/locales_full.mk
@@ -1,3 +1,3 @@
-PRODUCT_LOCALES := en_US cs_CZ da_DK de_AT de_CH de_DE de_LI el_GR en_AU en_CA en_GB en_NZ en_SG es_ES fr_CA fr_CH fr_BE fr_FR it_CH it_IT ja_JP ko_KR nb_NO nl_BE nl_NL pl_PL pt_PT ru_RU sv_SE tr_TR zh_CN zh_HK zh_TW am_ET hi_IN
+PRODUCT_LOCALES := en_US cs_CZ da_DK de_AT de_CH de_DE de_LI el_GR en_AU en_CA en_GB en_NZ en_SG eo_EU es_ES fr_CA fr_CH fr_BE fr_FR it_CH it_IT ja_JP ko_KR nb_NO nl_BE nl_NL pl_PL pt_PT ru_RU sv_SE tr_TR zh_CN zh_HK zh_TW am_ET hi_IN
 
 $(call inherit-product, build/target/product/languages_full.mk)
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index a5d941e..4707cb9 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -87,6 +87,7 @@
 	development/tools/emulator/system/camera/media_codecs.xml:system/etc/media_codecs.xml \
 	frameworks/native/data/etc/android.hardware.touchscreen.multitouch.jazzhand.xml:system/etc/permissions/android.hardware.touchscreen.multitouch.jazzhand.xml \
 	frameworks/native/data/etc/android.hardware.camera.autofocus.xml:system/etc/permissions/android.hardware.camera.autofocus.xml \
+	frameworks/av/media/libeffects/data/audio_effects.conf:system/etc/audio_effects.conf \
 	hardware/libhardware_legacy/audio/audio_policy.conf:system/etc/audio_policy.conf
 
 $(call inherit-product-if-exists, frameworks/base/data/fonts/fonts.mk)
diff --git a/target/product/sdk_mips.mk b/target/product/sdk_mips.mk
new file mode 100644
index 0000000..2072400
--- /dev/null
+++ b/target/product/sdk_mips.mk
@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2012 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is a build configuration for a full-featured build of the
+# Open-Source part of the tree. It's geared toward a US-centric
+# build quite specifically for the emulator, and might not be
+# entirely appropriate to inherit from for on-device configurations.
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/sdk.mk)
+
+# Overrides
+PRODUCT_BRAND := generic_mips
+PRODUCT_NAME := sdk_mips
+PRODUCT_DEVICE := generic_mips
+PRODUCT_MODEL := Android SDK for Mips